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<div class="header">
  <div class="summary">
<a href="classEigen_1_1PermutationBase-members.html">List of all members</a> &#124;
<a href="#pub-methods">Public Member Functions</a>  </div>
  <div class="headertitle">
<div class="title">Eigen::PermutationBase&lt; Derived &gt; Class Template Reference<div class="ingroups"><a class="el" href="group__DenseMatrixManipulation__chapter.html">Dense matrix and array manipulation</a> &raquo; <a class="el" href="group__DenseMatrixManipulation__Reference.html">Reference</a> &raquo; <a class="el" href="group__Core__Module.html">Core module</a></div></div>  </div>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;typename Derived&gt;<br />
class Eigen::PermutationBase&lt; Derived &gt;</h3>

<p>Base class for permutations. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
  <table class="tparams">
    <tr><td class="paramname">Derived</td><td>the derived class</td></tr>
  </table>
  </dd>
</dl>
<p>This class is the base class for all expressions representing a permutation matrix, internally stored as a vector of integers. The convention followed here is that if \( \sigma \) is a permutation, the corresponding permutation matrix \( P_\sigma \) is such that if \( (e_1,\ldots,e_p) \) is the canonical basis, we have: </p><p class="formulaDsp">
\[ P_\sigma(e_i) = e_{\sigma(i)}. \]
</p>
<p> This convention ensures that for any two permutations \( \sigma, \tau \), we have: </p><p class="formulaDsp">
\[ P_{\sigma\circ\tau} = P_\sigma P_\tau. \]
</p>
<p>Permutation matrices are square and invertible.</p>
<p>Notice that in addition to the member functions and operators listed here, there also are non-member operator* to multiply any kind of permutation object with any kind of matrix expression (<a class="el" href="classEigen_1_1MatrixBase.html" title="Base class for all dense matrices, vectors, and expressions.">MatrixBase</a>) on either side.</p>
<dl class="section see"><dt>See also</dt><dd>class <a class="el" href="classEigen_1_1PermutationMatrix.html" title="Permutation matrix.">PermutationMatrix</a>, class <a class="el" href="classEigen_1_1PermutationWrapper.html" title="Class to view a vector of integers as a permutation matrix.">PermutationWrapper</a> </dd></dl>
</div><div id="dynsection-0" onclick="return toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;">
  <img id="dynsection-0-trigger" src="closed.png" alt="+"/> Inheritance diagram for Eigen::PermutationBase&lt; Derived &gt;:</div>
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<div id="dynsection-0-content" class="dyncontent" style="display:none;">
<div class="center"><img src="classEigen_1_1PermutationBase__inherit__graph.png" border="0" usemap="#aEigen_1_1PermutationBase_3_01Derived_01_4_inherit__map" alt="Inheritance graph"/></div>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a4e3455bf12b56123e38a8220c6b508dc"><td class="memItemLeft" align="right" valign="top">Derived &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a4e3455bf12b56123e38a8220c6b508dc">applyTranspositionOnTheLeft</a> (<a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a> i, <a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a> j)</td></tr>
<tr class="separator:a4e3455bf12b56123e38a8220c6b508dc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5f98da0712570d0c4b12f61839ae4193"><td class="memItemLeft" align="right" valign="top">Derived &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a5f98da0712570d0c4b12f61839ae4193">applyTranspositionOnTheRight</a> (<a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a> i, <a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a> j)</td></tr>
<tr class="separator:a5f98da0712570d0c4b12f61839ae4193"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a26961ef6cfef586d412054ee5a20d430"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a26961ef6cfef586d412054ee5a20d430">cols</a> () const</td></tr>
<tr class="separator:a26961ef6cfef586d412054ee5a20d430"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1fc7a5823544700c2e0795e87f9c6d09"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a1fc7a5823544700c2e0795e87f9c6d09">determinant</a> () const</td></tr>
<tr class="separator:a1fc7a5823544700c2e0795e87f9c6d09"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a16fa3afafdf703399d62c80f950802f1"><td class="memItemLeft" align="right" valign="top">IndicesType &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a16fa3afafdf703399d62c80f950802f1">indices</a> ()</td></tr>
<tr class="separator:a16fa3afafdf703399d62c80f950802f1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:adec727546b6882ecaa57e76d084951c5"><td class="memItemLeft" align="right" valign="top">const IndicesType &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#adec727546b6882ecaa57e76d084951c5">indices</a> () const</td></tr>
<tr class="separator:adec727546b6882ecaa57e76d084951c5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:adb9af427f317202366c2832876064eb3"><td class="memItemLeft" align="right" valign="top">InverseReturnType&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#adb9af427f317202366c2832876064eb3">inverse</a> () const</td></tr>
<tr class="separator:adb9af427f317202366c2832876064eb3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a865e88989a76b7e92f39bad5250b89c4"><td class="memTemplParams" colspan="2">template&lt;typename Other &gt; </td></tr>
<tr class="memitem:a865e88989a76b7e92f39bad5250b89c4"><td class="memTemplItemLeft" align="right" valign="top">PlainPermutationType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a865e88989a76b7e92f39bad5250b89c4">operator*</a> (const InverseImpl&lt; Other, <a class="el" href="structEigen_1_1PermutationStorage.html">PermutationStorage</a> &gt; &amp;other) const</td></tr>
<tr class="separator:a865e88989a76b7e92f39bad5250b89c4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae81574e059f6b9b7de2ea747fd346a1b"><td class="memTemplParams" colspan="2">template&lt;typename Other &gt; </td></tr>
<tr class="memitem:ae81574e059f6b9b7de2ea747fd346a1b"><td class="memTemplItemLeft" align="right" valign="top">PlainPermutationType&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#ae81574e059f6b9b7de2ea747fd346a1b">operator*</a> (const <a class="el" href="classEigen_1_1PermutationBase.html">PermutationBase</a>&lt; Other &gt; &amp;other) const</td></tr>
<tr class="separator:ae81574e059f6b9b7de2ea747fd346a1b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8e15540549c5a4e2d5b3b426fef8fbcf"><td class="memTemplParams" colspan="2">template&lt;typename OtherDerived &gt; </td></tr>
<tr class="memitem:a8e15540549c5a4e2d5b3b426fef8fbcf"><td class="memTemplItemLeft" align="right" valign="top">Derived &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a8e15540549c5a4e2d5b3b426fef8fbcf">operator=</a> (const <a class="el" href="classEigen_1_1PermutationBase.html">PermutationBase</a>&lt; OtherDerived &gt; &amp;other)</td></tr>
<tr class="separator:a8e15540549c5a4e2d5b3b426fef8fbcf"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:acaa7cce9ea62c811cec12e86dbb2f0de"><td class="memTemplParams" colspan="2">template&lt;typename OtherDerived &gt; </td></tr>
<tr class="memitem:acaa7cce9ea62c811cec12e86dbb2f0de"><td class="memTemplItemLeft" align="right" valign="top">Derived &amp;&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#acaa7cce9ea62c811cec12e86dbb2f0de">operator=</a> (const TranspositionsBase&lt; OtherDerived &gt; &amp;tr)</td></tr>
<tr class="separator:acaa7cce9ea62c811cec12e86dbb2f0de"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0e0fda6e84d69e02432e4770359bb532"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a0e0fda6e84d69e02432e4770359bb532">resize</a> (<a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a> newSize)</td></tr>
<tr class="separator:a0e0fda6e84d69e02432e4770359bb532"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:acd7ed28ee514287f933de8467768925b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#acd7ed28ee514287f933de8467768925b">rows</a> () const</td></tr>
<tr class="separator:acd7ed28ee514287f933de8467768925b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6805bb75fd7966ea71895c24ff196444"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a6805bb75fd7966ea71895c24ff196444">setIdentity</a> ()</td></tr>
<tr class="separator:a6805bb75fd7966ea71895c24ff196444"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a830a80511a61634ef437795916f7f8da"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a830a80511a61634ef437795916f7f8da">setIdentity</a> (<a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a> newSize)</td></tr>
<tr class="separator:a830a80511a61634ef437795916f7f8da"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2216f9ce7b453ac39c46ff0323daeac9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a2216f9ce7b453ac39c46ff0323daeac9">size</a> () const</td></tr>
<tr class="separator:a2216f9ce7b453ac39c46ff0323daeac9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:addfa91a2c2c69c76159f1091368a505f"><td class="memItemLeft" align="right" valign="top">DenseMatrixType&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#addfa91a2c2c69c76159f1091368a505f">toDenseMatrix</a> () const</td></tr>
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<tr class="memitem:a05805e9f4182eec3f6632e1c765b5ffe"><td class="memItemLeft" align="right" valign="top">InverseReturnType&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classEigen_1_1PermutationBase.html#a05805e9f4182eec3f6632e1c765b5ffe">transpose</a> () const</td></tr>
<tr class="separator:a05805e9f4182eec3f6632e1c765b5ffe"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_structEigen_1_1EigenBase"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_structEigen_1_1EigenBase')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="structEigen_1_1EigenBase.html">Eigen::EigenBase&lt; Derived &gt;</a></td></tr>
<tr class="memitem:a2d768a9877f5f69f49432d447b552bfe inherit pub_methods_structEigen_1_1EigenBase"><td class="memItemLeft" align="right" valign="top">EIGEN_CONSTEXPR <a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structEigen_1_1EigenBase.html#a2d768a9877f5f69f49432d447b552bfe">cols</a> () const EIGEN_NOEXCEPT</td></tr>
<tr class="separator:a2d768a9877f5f69f49432d447b552bfe inherit pub_methods_structEigen_1_1EigenBase"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1fbabe7f12bcbfba3b9a448b1f5e46fa inherit pub_methods_structEigen_1_1EigenBase"><td class="memItemLeft" align="right" valign="top">Derived &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structEigen_1_1EigenBase.html#a1fbabe7f12bcbfba3b9a448b1f5e46fa">derived</a> ()</td></tr>
<tr class="separator:a1fbabe7f12bcbfba3b9a448b1f5e46fa inherit pub_methods_structEigen_1_1EigenBase"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afd4f3f1c57b7594b96a7e30f2974ea2e inherit pub_methods_structEigen_1_1EigenBase"><td class="memItemLeft" align="right" valign="top">const Derived &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structEigen_1_1EigenBase.html#afd4f3f1c57b7594b96a7e30f2974ea2e">derived</a> () const</td></tr>
<tr class="separator:afd4f3f1c57b7594b96a7e30f2974ea2e inherit pub_methods_structEigen_1_1EigenBase"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac22eb0695d00edd7d4a3b2d0a98b81c2 inherit pub_methods_structEigen_1_1EigenBase"><td class="memItemLeft" align="right" valign="top">EIGEN_CONSTEXPR <a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structEigen_1_1EigenBase.html#ac22eb0695d00edd7d4a3b2d0a98b81c2">rows</a> () const EIGEN_NOEXCEPT</td></tr>
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<tr class="memitem:ae106171b6fefd3f7af108a8283de36c9 inherit pub_methods_structEigen_1_1EigenBase"><td class="memItemLeft" align="right" valign="top">EIGEN_CONSTEXPR <a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structEigen_1_1EigenBase.html#ae106171b6fefd3f7af108a8283de36c9">size</a> () const EIGEN_NOEXCEPT</td></tr>
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Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pub_types_structEigen_1_1EigenBase"><td colspan="2" onclick="javascript:toggleInherit('pub_types_structEigen_1_1EigenBase')"><img src="closed.png" alt="-"/>&#160;Public Types inherited from <a class="el" href="structEigen_1_1EigenBase.html">Eigen::EigenBase&lt; Derived &gt;</a></td></tr>
<tr class="memitem:a554f30542cc2316add4b1ea0a492ff02 inherit pub_types_structEigen_1_1EigenBase"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="namespaceEigen.html#a62e77e0933482dafde8fe197d9a2cfde">Eigen::Index</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">Index</a></td></tr>
<tr class="memdesc:a554f30542cc2316add4b1ea0a492ff02 inherit pub_types_structEigen_1_1EigenBase"><td class="mdescLeft">&#160;</td><td class="mdescRight">The interface type of indices.  <a href="structEigen_1_1EigenBase.html#a554f30542cc2316add4b1ea0a492ff02">More...</a><br /></td></tr>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a4e3455bf12b56123e38a8220c6b508dc">&#9670;&nbsp;</a></span>applyTranspositionOnTheLeft()</h2>

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<p>Multiplies *this by the transposition \((ij)\) on the left.</p>
<dl class="section return"><dt>Returns</dt><dd>a reference to *this.</dd></dl>
<dl class="section warning"><dt>Warning</dt><dd>This is much slower than <a class="el" href="classEigen_1_1PermutationBase.html#a5f98da0712570d0c4b12f61839ae4193">applyTranspositionOnTheRight(Index,Index)</a>: this has linear complexity and requires a lot of branching.</dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classEigen_1_1PermutationBase.html#a5f98da0712570d0c4b12f61839ae4193">applyTranspositionOnTheRight(Index,Index)</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a5f98da0712570d0c4b12f61839ae4193">&#9670;&nbsp;</a></span>applyTranspositionOnTheRight()</h2>

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<p>Multiplies *this by the transposition \((ij)\) on the right.</p>
<dl class="section return"><dt>Returns</dt><dd>a reference to *this.</dd></dl>
<p>This is a fast operation, it only consists in swapping two indices.</p>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="classEigen_1_1PermutationBase.html#a4e3455bf12b56123e38a8220c6b508dc">applyTranspositionOnTheLeft(Index,Index)</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a26961ef6cfef586d412054ee5a20d430">&#9670;&nbsp;</a></span>cols()</h2>

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<dl class="section return"><dt>Returns</dt><dd>the number of columns </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a1fc7a5823544700c2e0795e87f9c6d09">&#9670;&nbsp;</a></span>determinant()</h2>

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<dl class="section return"><dt>Returns</dt><dd>the determinant of the permutation matrix, which is either 1 or -1 depending on the parity of the permutation.</dd></dl>
<p>This function is O(<code>n</code>) procedure allocating a buffer of <code>n</code> booleans. </p>

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<dl class="section return"><dt>Returns</dt><dd>a reference to the stored array representing the permutation. </dd></dl>

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<p>const version of <a class="el" href="classEigen_1_1PermutationBase.html#a16fa3afafdf703399d62c80f950802f1">indices()</a>. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#adb9af427f317202366c2832876064eb3">&#9670;&nbsp;</a></span>inverse()</h2>

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<dl class="section return"><dt>Returns</dt><dd>the inverse permutation matrix.</dd></dl>
<dl class="section note"><dt>Note</dt><dd>This function returns the result by value. In order to make that efficient, it is implemented as just a return statement using a special constructor, hopefully allowing the compiler to perform a RVO (return value optimization). </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>the product of a permutation with another inverse permutation.</dd></dl>
<dl class="section note"><dt>Note</dt><dd>This function returns the result by value. In order to make that efficient, it is implemented as just a return statement using a special constructor, hopefully allowing the compiler to perform a RVO (return value optimization). </dd></dl>

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<dl class="section return"><dt>Returns</dt><dd>the product permutation matrix.</dd></dl>
<dl class="section note"><dt>Note</dt><dd>This function returns the result by value. In order to make that efficient, it is implemented as just a return statement using a special constructor, hopefully allowing the compiler to perform a RVO (return value optimization). </dd></dl>

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<p>Copies the other permutation into *this </p>

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<p>Assignment from the <a class="el" href="classEigen_1_1Transpositions.html" title="Represents a sequence of transpositions (row/column interchange)">Transpositions</a> <em>tr</em> </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a0e0fda6e84d69e02432e4770359bb532">&#9670;&nbsp;</a></span>resize()</h2>

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<p>Resizes to given size. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#acd7ed28ee514287f933de8467768925b">&#9670;&nbsp;</a></span>rows()</h2>

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<dl class="section return"><dt>Returns</dt><dd>the number of rows </dd></dl>

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<p>Sets *this to be the identity permutation matrix </p>

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<p>Sets *this to be the identity permutation matrix of given size. </p>

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<dl class="section return"><dt>Returns</dt><dd>the size of a side of the respective square matrix, i.e., the number of indices </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#addfa91a2c2c69c76159f1091368a505f">&#9670;&nbsp;</a></span>toDenseMatrix()</h2>

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<dl class="section return"><dt>Returns</dt><dd>a <a class="el" href="classEigen_1_1Matrix.html" title="The matrix class, also used for vectors and row-vectors.">Matrix</a> object initialized from this permutation matrix. Notice that it is inefficient to return this <a class="el" href="classEigen_1_1Matrix.html" title="The matrix class, also used for vectors and row-vectors.">Matrix</a> object by value. For efficiency, favor using the <a class="el" href="classEigen_1_1Matrix.html" title="The matrix class, also used for vectors and row-vectors.">Matrix</a> constructor taking <a class="el" href="structEigen_1_1EigenBase.html">EigenBase</a> objects. </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#a05805e9f4182eec3f6632e1c765b5ffe">&#9670;&nbsp;</a></span>transpose()</h2>

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<dl class="section return"><dt>Returns</dt><dd>the tranpose permutation matrix.</dd></dl>
<dl class="section note"><dt>Note</dt><dd>This function returns the result by value. In order to make that efficient, it is implemented as just a return statement using a special constructor, hopefully allowing the compiler to perform a RVO (return value optimization). </dd></dl>

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<hr/>The documentation for this class was generated from the following file:<ul>
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